2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
114 * Portions of the attached software ("Contribution") are developed by
115 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
117 * The Contribution is licensed pursuant to the OpenSSL open source
118 * license provided above.
120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
124 /* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
152 #include "ssl_locl.h"
153 #include "kssl_lcl.h"
154 #include <openssl/buffer.h>
155 #include <openssl/rand.h>
156 #include <openssl/objects.h>
157 #include <openssl/evp.h>
158 #include <openssl/md5.h>
159 #ifndef OPENSSL_NO_DH
160 #include <openssl/dh.h>
162 #include <openssl/bn.h>
163 #ifndef OPENSSL_NO_ENGINE
164 #include <openssl/engine.h>
167 static const SSL_METHOD *ssl3_get_client_method(int ver);
168 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
169 #ifndef OPENSSL_NO_TLSEXT
170 static int ssl3_check_finished(SSL *s);
173 static const SSL_METHOD *ssl3_get_client_method(int ver)
175 if (ver == SSL3_VERSION)
176 return(SSLv3_client_method());
181 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
182 ssl_undefined_function,
184 ssl3_get_client_method)
186 int ssl3_connect(SSL *s)
189 unsigned long Time=(unsigned long)time(NULL);
191 void (*cb)(const SSL *ssl,int type,int val)=NULL;
193 int new_state,state,skip=0;;
195 RAND_add(&Time,sizeof(Time),0);
199 if (s->info_callback != NULL)
201 else if (s->ctx->info_callback != NULL)
202 cb=s->ctx->info_callback;
205 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
213 case SSL_ST_RENEGOTIATE:
215 s->state=SSL_ST_CONNECT;
216 s->ctx->stats.sess_connect_renegotiate++;
220 case SSL_ST_BEFORE|SSL_ST_CONNECT:
221 case SSL_ST_OK|SSL_ST_CONNECT:
224 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
226 if ((s->version & 0xff00 ) != 0x0300)
228 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
233 /* s->version=SSL3_VERSION; */
234 s->type=SSL_ST_CONNECT;
236 if (s->init_buf == NULL)
238 if ((buf=BUF_MEM_new()) == NULL)
243 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
252 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
254 /* setup buffing BIO */
255 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
257 /* don't push the buffering BIO quite yet */
259 ssl3_init_finished_mac(s);
261 s->state=SSL3_ST_CW_CLNT_HELLO_A;
262 s->ctx->stats.sess_connect++;
266 case SSL3_ST_CW_CLNT_HELLO_A:
267 case SSL3_ST_CW_CLNT_HELLO_B:
270 ret=ssl3_client_hello(s);
271 if (ret <= 0) goto end;
272 s->state=SSL3_ST_CR_SRVR_HELLO_A;
275 /* turn on buffering for the next lot of output */
276 if (s->bbio != s->wbio)
277 s->wbio=BIO_push(s->bbio,s->wbio);
281 case SSL3_ST_CR_SRVR_HELLO_A:
282 case SSL3_ST_CR_SRVR_HELLO_B:
283 ret=ssl3_get_server_hello(s);
284 if (ret <= 0) goto end;
287 s->state=SSL3_ST_CR_FINISHED_A;
289 s->state=SSL3_ST_CR_CERT_A;
293 case SSL3_ST_CR_CERT_A:
294 case SSL3_ST_CR_CERT_B:
295 #ifndef OPENSSL_NO_TLSEXT
296 ret=ssl3_check_finished(s);
297 if (ret <= 0) goto end;
301 if (s->tlsext_ticket_expected)
302 s->state=SSL3_ST_CR_SESSION_TICKET_A;
304 s->state=SSL3_ST_CR_FINISHED_A;
309 /* Check if it is anon DH/ECDH */
311 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
312 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
314 ret=ssl3_get_server_certificate(s);
315 if (ret <= 0) goto end;
316 #ifndef OPENSSL_NO_TLSEXT
317 if (s->tlsext_status_expected)
318 s->state=SSL3_ST_CR_CERT_STATUS_A;
320 s->state=SSL3_ST_CR_KEY_EXCH_A;
325 s->state=SSL3_ST_CR_KEY_EXCH_A;
332 s->state=SSL3_ST_CR_KEY_EXCH_A;
337 case SSL3_ST_CR_KEY_EXCH_A:
338 case SSL3_ST_CR_KEY_EXCH_B:
339 ret=ssl3_get_key_exchange(s);
340 if (ret <= 0) goto end;
341 s->state=SSL3_ST_CR_CERT_REQ_A;
344 /* at this point we check that we have the
345 * required stuff from the server */
346 if (!ssl3_check_cert_and_algorithm(s))
353 case SSL3_ST_CR_CERT_REQ_A:
354 case SSL3_ST_CR_CERT_REQ_B:
355 ret=ssl3_get_certificate_request(s);
356 if (ret <= 0) goto end;
357 s->state=SSL3_ST_CR_SRVR_DONE_A;
361 case SSL3_ST_CR_SRVR_DONE_A:
362 case SSL3_ST_CR_SRVR_DONE_B:
363 ret=ssl3_get_server_done(s);
364 if (ret <= 0) goto end;
365 if (s->s3->tmp.cert_req)
366 s->state=SSL3_ST_CW_CERT_A;
368 s->state=SSL3_ST_CW_KEY_EXCH_A;
373 case SSL3_ST_CW_CERT_A:
374 case SSL3_ST_CW_CERT_B:
375 case SSL3_ST_CW_CERT_C:
376 case SSL3_ST_CW_CERT_D:
377 ret=ssl3_send_client_certificate(s);
378 if (ret <= 0) goto end;
379 s->state=SSL3_ST_CW_KEY_EXCH_A;
383 case SSL3_ST_CW_KEY_EXCH_A:
384 case SSL3_ST_CW_KEY_EXCH_B:
385 ret=ssl3_send_client_key_exchange(s);
386 if (ret <= 0) goto end;
387 /* EAY EAY EAY need to check for DH fix cert
389 /* For TLS, cert_req is set to 2, so a cert chain
390 * of nothing is sent, but no verify packet is sent */
391 /* XXX: For now, we do not support client
392 * authentication in ECDH cipher suites with
393 * ECDH (rather than ECDSA) certificates.
394 * We need to skip the certificate verify
395 * message when client's ECDH public key is sent
396 * inside the client certificate.
398 if (s->s3->tmp.cert_req == 1)
400 s->state=SSL3_ST_CW_CERT_VRFY_A;
404 s->state=SSL3_ST_CW_CHANGE_A;
405 s->s3->change_cipher_spec=0;
411 case SSL3_ST_CW_CERT_VRFY_A:
412 case SSL3_ST_CW_CERT_VRFY_B:
413 ret=ssl3_send_client_verify(s);
414 if (ret <= 0) goto end;
415 s->state=SSL3_ST_CW_CHANGE_A;
417 s->s3->change_cipher_spec=0;
420 case SSL3_ST_CW_CHANGE_A:
421 case SSL3_ST_CW_CHANGE_B:
422 ret=ssl3_send_change_cipher_spec(s,
423 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
424 if (ret <= 0) goto end;
425 s->state=SSL3_ST_CW_FINISHED_A;
428 s->session->cipher=s->s3->tmp.new_cipher;
429 #ifdef OPENSSL_NO_COMP
430 s->session->compress_meth=0;
432 if (s->s3->tmp.new_compression == NULL)
433 s->session->compress_meth=0;
435 s->session->compress_meth=
436 s->s3->tmp.new_compression->id;
438 if (!s->method->ssl3_enc->setup_key_block(s))
444 if (!s->method->ssl3_enc->change_cipher_state(s,
445 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
453 case SSL3_ST_CW_FINISHED_A:
454 case SSL3_ST_CW_FINISHED_B:
455 ret=ssl3_send_finished(s,
456 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
457 s->method->ssl3_enc->client_finished_label,
458 s->method->ssl3_enc->client_finished_label_len);
459 if (ret <= 0) goto end;
460 s->state=SSL3_ST_CW_FLUSH;
463 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
466 s->s3->tmp.next_state=SSL_ST_OK;
467 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
470 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
471 s->s3->delay_buf_pop_ret=0;
476 #ifndef OPENSSL_NO_TLSEXT
477 /* Allow NewSessionTicket if ticket expected */
478 if (s->tlsext_ticket_expected)
479 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
483 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
488 #ifndef OPENSSL_NO_TLSEXT
489 case SSL3_ST_CR_SESSION_TICKET_A:
490 case SSL3_ST_CR_SESSION_TICKET_B:
491 ret=ssl3_get_new_session_ticket(s);
492 if (ret <= 0) goto end;
493 s->state=SSL3_ST_CR_FINISHED_A;
497 case SSL3_ST_CR_CERT_STATUS_A:
498 case SSL3_ST_CR_CERT_STATUS_B:
499 ret=ssl3_get_cert_status(s);
500 if (ret <= 0) goto end;
501 s->state=SSL3_ST_CR_KEY_EXCH_A;
506 case SSL3_ST_CR_FINISHED_A:
507 case SSL3_ST_CR_FINISHED_B:
509 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
510 SSL3_ST_CR_FINISHED_B);
511 if (ret <= 0) goto end;
514 s->state=SSL3_ST_CW_CHANGE_A;
520 case SSL3_ST_CW_FLUSH:
521 /* number of bytes to be flushed */
522 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
525 s->rwstate=SSL_WRITING;
526 num1=BIO_flush(s->wbio);
527 if (num1 <= 0) { ret= -1; goto end; }
528 s->rwstate=SSL_NOTHING;
531 s->state=s->s3->tmp.next_state;
535 /* clean a few things up */
536 ssl3_cleanup_key_block(s);
538 if (s->init_buf != NULL)
540 BUF_MEM_free(s->init_buf);
544 /* If we are not 'joining' the last two packets,
545 * remove the buffering now */
546 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
547 ssl_free_wbio_buffer(s);
548 /* else do it later in ssl3_write */
553 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
554 if (s->hit) s->ctx->stats.sess_hit++;
558 s->handshake_func=ssl3_connect;
559 s->ctx->stats.sess_connect_good++;
561 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
567 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
573 /* did we do anything */
574 if (!s->s3->tmp.reuse_message && !skip)
578 if ((ret=BIO_flush(s->wbio)) <= 0)
582 if ((cb != NULL) && (s->state != state))
586 cb(s,SSL_CB_CONNECT_LOOP,1);
597 cb(s,SSL_CB_CONNECT_EXIT,ret);
602 int ssl3_client_hello(SSL *s)
607 unsigned long Time,l;
608 #ifndef OPENSSL_NO_COMP
613 buf=(unsigned char *)s->init_buf->data;
614 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
616 if ((s->session == NULL) ||
617 (s->session->ssl_version != s->version) ||
618 (s->session->not_resumable))
620 if (!ssl_get_new_session(s,0))
623 /* else use the pre-loaded session */
625 p=s->s3->client_random;
626 Time=(unsigned long)time(NULL); /* Time */
628 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
631 /* Do the message type and length last */
634 *(p++)=s->version>>8;
635 *(p++)=s->version&0xff;
636 s->client_version=s->version;
639 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
646 i=s->session->session_id_length;
650 if (i > (int)sizeof(s->session->session_id))
652 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
655 memcpy(p,s->session->session_id,i);
659 /* Ciphers supported */
660 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
663 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
670 #ifdef OPENSSL_NO_COMP
674 if ((s->options & SSL_OP_NO_COMPRESSION)
675 || !s->ctx->comp_methods)
678 j=sk_SSL_COMP_num(s->ctx->comp_methods);
682 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
686 *(p++)=0; /* Add the NULL method */
688 #ifndef OPENSSL_NO_TLSEXT
690 if (ssl_prepare_clienthello_tlsext(s) <= 0)
692 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
695 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
697 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
704 *(d++)=SSL3_MT_CLIENT_HELLO;
707 s->state=SSL3_ST_CW_CLNT_HELLO_B;
708 /* number of bytes to write */
713 /* SSL3_ST_CW_CLNT_HELLO_B */
714 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
719 int ssl3_get_server_hello(SSL *s)
721 STACK_OF(SSL_CIPHER) *sk;
727 #ifndef OPENSSL_NO_COMP
731 n=s->method->ssl_get_message(s,
732 SSL3_ST_CR_SRVR_HELLO_A,
733 SSL3_ST_CR_SRVR_HELLO_B,
738 if (!ok) return((int)n);
740 if ( SSL_version(s) == DTLS1_VERSION)
742 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
744 if ( s->d1->send_cookie == 0)
746 s->s3->tmp.reuse_message = 1;
749 else /* already sent a cookie */
751 al=SSL_AD_UNEXPECTED_MESSAGE;
752 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
758 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
760 al=SSL_AD_UNEXPECTED_MESSAGE;
761 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
765 d=p=(unsigned char *)s->init_msg;
767 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
769 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
770 s->version=(s->version&0xff00)|p[1];
771 al=SSL_AD_PROTOCOL_VERSION;
776 /* load the server hello data */
777 /* load the server random */
778 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
781 /* get the session-id */
784 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
786 al=SSL_AD_ILLEGAL_PARAMETER;
787 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
791 #ifndef OPENSSL_NO_TLSEXT
792 /* check if we want to resume the session based on external pre-shared secret */
793 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
795 SSL_CIPHER *pref_cipher=NULL;
796 s->session->master_key_length=sizeof(s->session->master_key);
797 if (s->tls_session_secret_cb(s, s->session->master_key,
798 &s->session->master_key_length,
800 s->tls_session_secret_cb_arg))
802 s->session->cipher = pref_cipher ?
803 pref_cipher : ssl_get_cipher_by_char(s, p+j);
806 #endif /* OPENSSL_NO_TLSEXT */
808 if (j != 0 && j == s->session->session_id_length
809 && memcmp(p,s->session->session_id,j) == 0)
811 if(s->sid_ctx_length != s->session->sid_ctx_length
812 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
814 /* actually a client application bug */
815 al=SSL_AD_ILLEGAL_PARAMETER;
816 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
821 else /* a miss or crap from the other end */
823 /* If we were trying for session-id reuse, make a new
824 * SSL_SESSION so we don't stuff up other people */
826 if (s->session->session_id_length > 0)
828 if (!ssl_get_new_session(s,0))
830 al=SSL_AD_INTERNAL_ERROR;
834 s->session->session_id_length=j;
835 memcpy(s->session->session_id,p,j); /* j could be 0 */
838 c=ssl_get_cipher_by_char(s,p);
842 al=SSL_AD_ILLEGAL_PARAMETER;
843 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
846 p+=ssl_put_cipher_by_char(s,NULL,NULL);
848 sk=ssl_get_ciphers_by_id(s);
849 i=sk_SSL_CIPHER_find(sk,c);
852 /* we did not say we would use this cipher */
853 al=SSL_AD_ILLEGAL_PARAMETER;
854 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
858 /* Depending on the session caching (internal/external), the cipher
859 and/or cipher_id values may not be set. Make sure that
860 cipher_id is set and use it for comparison. */
861 if (s->session->cipher)
862 s->session->cipher_id = s->session->cipher->id;
863 if (s->hit && (s->session->cipher_id != c->id))
866 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
868 al=SSL_AD_ILLEGAL_PARAMETER;
869 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
873 s->s3->tmp.new_cipher=c;
874 ssl3_digest_cached_records(s);
876 /* lets get the compression algorithm */
878 #ifdef OPENSSL_NO_COMP
881 al=SSL_AD_ILLEGAL_PARAMETER;
882 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
887 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
890 comp=ssl3_comp_find(s->ctx->comp_methods,j);
892 if ((j != 0) && (comp == NULL))
894 al=SSL_AD_ILLEGAL_PARAMETER;
895 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
900 s->s3->tmp.new_compression=comp;
904 #ifndef OPENSSL_NO_TLSEXT
906 if (s->version > SSL3_VERSION)
908 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
910 /* 'al' set by ssl_parse_serverhello_tlsext */
911 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
914 if (ssl_check_serverhello_tlsext(s) <= 0)
916 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
924 /* wrong packet length */
925 al=SSL_AD_DECODE_ERROR;
926 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
932 ssl3_send_alert(s,SSL3_AL_FATAL,al);
937 int ssl3_get_server_certificate(SSL *s)
940 unsigned long n,nc,llen,l;
942 const unsigned char *q,*p;
944 STACK_OF(X509) *sk=NULL;
947 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
949 n=s->method->ssl_get_message(s,
956 if (!ok) return((int)n);
958 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
960 s->s3->tmp.reuse_message=1;
964 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
966 al=SSL_AD_UNEXPECTED_MESSAGE;
967 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
970 p=d=(unsigned char *)s->init_msg;
972 if ((sk=sk_X509_new_null()) == NULL)
974 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
981 al=SSL_AD_DECODE_ERROR;
982 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
985 for (nc=0; nc<llen; )
990 al=SSL_AD_DECODE_ERROR;
991 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
996 x=d2i_X509(NULL,&q,l);
999 al=SSL_AD_BAD_CERTIFICATE;
1000 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1005 al=SSL_AD_DECODE_ERROR;
1006 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1009 if (!sk_X509_push(sk,x))
1011 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1019 i=ssl_verify_cert_chain(s,sk);
1020 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
1021 #ifndef OPENSSL_NO_KRB5
1022 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1023 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1024 #endif /* OPENSSL_NO_KRB5 */
1027 al=ssl_verify_alarm_type(s->verify_result);
1028 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1031 ERR_clear_error(); /* but we keep s->verify_result */
1033 sc=ssl_sess_cert_new();
1034 if (sc == NULL) goto err;
1036 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1037 s->session->sess_cert=sc;
1040 /* Inconsistency alert: cert_chain does include the peer's
1041 * certificate, which we don't include in s3_srvr.c */
1042 x=sk_X509_value(sk,0);
1044 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1046 pkey=X509_get_pubkey(x);
1048 /* VRS: allow null cert if auth == KRB5 */
1049 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1050 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1054 printf("pkey,x = %p, %p\n", pkey,x);
1055 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1056 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1057 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1058 #endif /* KSSL_DEBUG */
1060 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1064 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1065 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1069 i=ssl_cert_type(x,pkey);
1070 if (need_cert && i < 0)
1074 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1075 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1081 sc->peer_cert_type=i;
1082 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1083 /* Why would the following ever happen?
1084 * We just created sc a couple of lines ago. */
1085 if (sc->peer_pkeys[i].x509 != NULL)
1086 X509_free(sc->peer_pkeys[i].x509);
1087 sc->peer_pkeys[i].x509=x;
1088 sc->peer_key= &(sc->peer_pkeys[i]);
1090 if (s->session->peer != NULL)
1091 X509_free(s->session->peer);
1092 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1097 sc->peer_cert_type=i;
1100 if (s->session->peer != NULL)
1101 X509_free(s->session->peer);
1102 s->session->peer=NULL;
1104 s->session->verify_result = s->verify_result;
1112 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1115 EVP_PKEY_free(pkey);
1117 sk_X509_pop_free(sk,X509_free);
1121 int ssl3_get_key_exchange(SSL *s)
1123 #ifndef OPENSSL_NO_RSA
1124 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1127 unsigned char *param,*p;
1128 int al,i,j,param_len,ok;
1130 EVP_PKEY *pkey=NULL;
1131 #ifndef OPENSSL_NO_RSA
1134 #ifndef OPENSSL_NO_DH
1137 #ifndef OPENSSL_NO_ECDH
1138 EC_KEY *ecdh = NULL;
1139 BN_CTX *bn_ctx = NULL;
1140 EC_POINT *srvr_ecpoint = NULL;
1142 int encoded_pt_len = 0;
1145 /* use same message size as in ssl3_get_certificate_request()
1146 * as ServerKeyExchange message may be skipped */
1147 n=s->method->ssl_get_message(s,
1148 SSL3_ST_CR_KEY_EXCH_A,
1149 SSL3_ST_CR_KEY_EXCH_B,
1153 if (!ok) return((int)n);
1155 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1157 #ifndef OPENSSL_NO_PSK
1158 /* In plain PSK ciphersuite, ServerKeyExchange can be
1159 omitted if no identity hint is sent. Set
1160 session->sess_cert anyway to avoid problems
1162 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1164 s->session->sess_cert=ssl_sess_cert_new();
1165 if (s->ctx->psk_identity_hint)
1166 OPENSSL_free(s->ctx->psk_identity_hint);
1167 s->ctx->psk_identity_hint = NULL;
1170 s->s3->tmp.reuse_message=1;
1174 param=p=(unsigned char *)s->init_msg;
1175 if (s->session->sess_cert != NULL)
1177 #ifndef OPENSSL_NO_RSA
1178 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1180 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1181 s->session->sess_cert->peer_rsa_tmp=NULL;
1184 #ifndef OPENSSL_NO_DH
1185 if (s->session->sess_cert->peer_dh_tmp)
1187 DH_free(s->session->sess_cert->peer_dh_tmp);
1188 s->session->sess_cert->peer_dh_tmp=NULL;
1191 #ifndef OPENSSL_NO_ECDH
1192 if (s->session->sess_cert->peer_ecdh_tmp)
1194 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1195 s->session->sess_cert->peer_ecdh_tmp=NULL;
1201 s->session->sess_cert=ssl_sess_cert_new();
1205 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1206 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1207 EVP_MD_CTX_init(&md_ctx);
1209 #ifndef OPENSSL_NO_PSK
1210 if (alg_k & SSL_kPSK)
1212 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1214 al=SSL_AD_HANDSHAKE_FAILURE;
1217 /* Store PSK identity hint for later use, hint is used
1218 * in ssl3_send_client_key_exchange. Assume that the
1219 * maximum length of a PSK identity hint can be as
1220 * long as the maximum length of a PSK identity. */
1221 if (i > PSK_MAX_IDENTITY_LEN)
1223 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1224 SSL_R_DATA_LENGTH_TOO_LONG);
1229 al=SSL_AD_DECODE_ERROR;
1230 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1231 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1234 /* If received PSK identity hint contains NULL
1235 * characters, the hint is truncated from the first
1236 * NULL. p may not be ending with NULL, so create a
1237 * NULL-terminated string. */
1238 memcpy(tmp_id_hint, p, i);
1239 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1240 if (s->ctx->psk_identity_hint != NULL)
1241 OPENSSL_free(s->ctx->psk_identity_hint);
1242 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1243 if (s->ctx->psk_identity_hint == NULL)
1245 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1253 #endif /* !OPENSSL_NO_PSK */
1254 #ifndef OPENSSL_NO_RSA
1255 if (alg_k & SSL_kRSA)
1257 if ((rsa=RSA_new()) == NULL)
1259 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1266 al=SSL_AD_DECODE_ERROR;
1267 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1270 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1272 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1281 al=SSL_AD_DECODE_ERROR;
1282 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1285 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1287 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1293 /* this should be because we are using an export cipher */
1294 if (alg_a & SSL_aRSA)
1295 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1298 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1301 s->session->sess_cert->peer_rsa_tmp=rsa;
1304 #else /* OPENSSL_NO_RSA */
1308 #ifndef OPENSSL_NO_DH
1309 else if (alg_k & SSL_kEDH)
1311 if ((dh=DH_new()) == NULL)
1313 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1320 al=SSL_AD_DECODE_ERROR;
1321 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1324 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1326 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1335 al=SSL_AD_DECODE_ERROR;
1336 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1339 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1341 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1350 al=SSL_AD_DECODE_ERROR;
1351 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1354 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1356 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1362 #ifndef OPENSSL_NO_RSA
1363 if (alg_a & SSL_aRSA)
1364 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1369 #ifndef OPENSSL_NO_DSA
1370 else if (alg_a & SSL_aDSS)
1371 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1373 /* else anonymous DH, so no certificate or pkey. */
1375 s->session->sess_cert->peer_dh_tmp=dh;
1378 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1380 al=SSL_AD_ILLEGAL_PARAMETER;
1381 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1384 #endif /* !OPENSSL_NO_DH */
1386 #ifndef OPENSSL_NO_ECDH
1387 else if (alg_k & SSL_kEECDH)
1390 const EC_GROUP *group;
1392 if ((ecdh=EC_KEY_new()) == NULL)
1394 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1398 /* Extract elliptic curve parameters and the
1399 * server's ephemeral ECDH public key.
1400 * Keep accumulating lengths of various components in
1401 * param_len and make sure it never exceeds n.
1404 /* XXX: For now we only support named (not generic) curves
1405 * and the ECParameters in this case is just three bytes.
1408 if ((param_len > n) ||
1409 (*p != NAMED_CURVE_TYPE) ||
1410 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1412 al=SSL_AD_INTERNAL_ERROR;
1413 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1417 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1420 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1423 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1425 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1428 EC_GROUP_free(ngroup);
1430 group = EC_KEY_get0_group(ecdh);
1432 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1433 (EC_GROUP_get_degree(group) > 163))
1435 al=SSL_AD_EXPORT_RESTRICTION;
1436 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1442 /* Next, get the encoded ECPoint */
1443 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1444 ((bn_ctx = BN_CTX_new()) == NULL))
1446 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1450 encoded_pt_len = *p; /* length of encoded point */
1452 param_len += (1 + encoded_pt_len);
1453 if ((param_len > n) ||
1454 (EC_POINT_oct2point(group, srvr_ecpoint,
1455 p, encoded_pt_len, bn_ctx) == 0))
1457 al=SSL_AD_DECODE_ERROR;
1458 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1465 /* The ECC/TLS specification does not mention
1466 * the use of DSA to sign ECParameters in the server
1467 * key exchange message. We do support RSA and ECDSA.
1470 #ifndef OPENSSL_NO_RSA
1471 else if (alg_a & SSL_aRSA)
1472 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1474 #ifndef OPENSSL_NO_ECDSA
1475 else if (alg_a & SSL_aECDSA)
1476 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1478 /* else anonymous ECDH, so no certificate or pkey. */
1479 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1480 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1482 BN_CTX_free(bn_ctx);
1483 EC_POINT_free(srvr_ecpoint);
1484 srvr_ecpoint = NULL;
1488 al=SSL_AD_UNEXPECTED_MESSAGE;
1489 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1492 #endif /* !OPENSSL_NO_ECDH */
1495 /* p points to the next byte, there are 'n' bytes left */
1497 /* if it was signed, check the signature */
1502 j=EVP_PKEY_size(pkey);
1504 if ((i != n) || (n > j) || (n <= 0))
1506 /* wrong packet length */
1507 al=SSL_AD_DECODE_ERROR;
1508 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1512 #ifndef OPENSSL_NO_RSA
1513 if (pkey->type == EVP_PKEY_RSA)
1519 for (num=2; num > 0; num--)
1521 EVP_DigestInit_ex(&md_ctx,(num == 2)
1522 ?s->ctx->md5:s->ctx->sha1, NULL);
1523 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1524 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1525 EVP_DigestUpdate(&md_ctx,param,param_len);
1526 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1530 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1534 al=SSL_AD_DECRYPT_ERROR;
1535 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1541 al=SSL_AD_DECRYPT_ERROR;
1542 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1548 #ifndef OPENSSL_NO_DSA
1549 if (pkey->type == EVP_PKEY_DSA)
1552 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1553 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1554 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1555 EVP_VerifyUpdate(&md_ctx,param,param_len);
1556 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1559 al=SSL_AD_DECRYPT_ERROR;
1560 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1566 #ifndef OPENSSL_NO_ECDSA
1567 if (pkey->type == EVP_PKEY_EC)
1569 /* let's do ECDSA */
1570 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1571 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1572 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1573 EVP_VerifyUpdate(&md_ctx,param,param_len);
1574 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1577 al=SSL_AD_DECRYPT_ERROR;
1578 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1585 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1591 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1592 /* aNULL or kPSK do not need public keys */
1594 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1597 /* still data left over */
1600 al=SSL_AD_DECODE_ERROR;
1601 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1605 EVP_PKEY_free(pkey);
1606 EVP_MD_CTX_cleanup(&md_ctx);
1609 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1611 EVP_PKEY_free(pkey);
1612 #ifndef OPENSSL_NO_RSA
1616 #ifndef OPENSSL_NO_DH
1620 #ifndef OPENSSL_NO_ECDH
1621 BN_CTX_free(bn_ctx);
1622 EC_POINT_free(srvr_ecpoint);
1626 EVP_MD_CTX_cleanup(&md_ctx);
1630 int ssl3_get_certificate_request(SSL *s)
1633 unsigned long n,nc,l;
1634 unsigned int llen,ctype_num,i;
1636 const unsigned char *p,*q;
1638 STACK_OF(X509_NAME) *ca_sk=NULL;
1640 n=s->method->ssl_get_message(s,
1641 SSL3_ST_CR_CERT_REQ_A,
1642 SSL3_ST_CR_CERT_REQ_B,
1647 if (!ok) return((int)n);
1649 s->s3->tmp.cert_req=0;
1651 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1653 s->s3->tmp.reuse_message=1;
1657 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1659 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1660 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1664 /* TLS does not like anon-DH with client cert */
1665 if (s->version > SSL3_VERSION)
1667 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1669 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1670 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1675 p=d=(unsigned char *)s->init_msg;
1677 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1679 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1683 /* get the certificate types */
1685 if (ctype_num > SSL3_CT_NUMBER)
1686 ctype_num=SSL3_CT_NUMBER;
1687 for (i=0; i<ctype_num; i++)
1688 s->s3->tmp.ctype[i]= p[i];
1691 /* get the CA RDNs */
1696 out=fopen("/tmp/vsign.der","w");
1697 fwrite(p,1,llen,out);
1702 if ((llen+ctype_num+2+1) != n)
1704 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1705 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1709 for (nc=0; nc<llen; )
1712 if ((l+nc+2) > llen)
1714 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1715 goto cont; /* netscape bugs */
1716 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1717 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1723 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1725 /* If netscape tolerance is on, ignore errors */
1726 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1730 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1731 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1738 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1739 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1742 if (!sk_X509_NAME_push(ca_sk,xn))
1744 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1758 /* we should setup a certificate to return.... */
1759 s->s3->tmp.cert_req=1;
1760 s->s3->tmp.ctype_num=ctype_num;
1761 if (s->s3->tmp.ca_names != NULL)
1762 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1763 s->s3->tmp.ca_names=ca_sk;
1768 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1772 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1774 return(X509_NAME_cmp(*a,*b));
1776 #ifndef OPENSSL_NO_TLSEXT
1777 int ssl3_get_new_session_ticket(SSL *s)
1779 int ok,al,ret=0, ticklen;
1781 const unsigned char *p;
1784 n=s->method->ssl_get_message(s,
1785 SSL3_ST_CR_SESSION_TICKET_A,
1786 SSL3_ST_CR_SESSION_TICKET_B,
1794 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1796 s->s3->tmp.reuse_message=1;
1799 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1801 al=SSL_AD_UNEXPECTED_MESSAGE;
1802 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1807 /* need at least ticket_lifetime_hint + ticket length */
1808 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1809 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1812 p=d=(unsigned char *)s->init_msg;
1813 n2l(p, s->session->tlsext_tick_lifetime_hint);
1815 /* ticket_lifetime_hint + ticket_length + ticket */
1816 if (ticklen + 6 != n)
1818 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1819 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1822 if (s->session->tlsext_tick)
1824 OPENSSL_free(s->session->tlsext_tick);
1825 s->session->tlsext_ticklen = 0;
1827 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1828 if (!s->session->tlsext_tick)
1830 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1833 memcpy(s->session->tlsext_tick, p, ticklen);
1834 s->session->tlsext_ticklen = ticklen;
1839 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1844 int ssl3_get_cert_status(SSL *s)
1847 unsigned long resplen,n;
1848 const unsigned char *p;
1850 n=s->method->ssl_get_message(s,
1851 SSL3_ST_CR_CERT_STATUS_A,
1852 SSL3_ST_CR_CERT_STATUS_B,
1853 SSL3_MT_CERTIFICATE_STATUS,
1857 if (!ok) return((int)n);
1860 /* need at least status type + length */
1861 al = SSL_AD_DECODE_ERROR;
1862 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1865 p = (unsigned char *)s->init_msg;
1866 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1868 al = SSL_AD_DECODE_ERROR;
1869 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1873 if (resplen + 4 != n)
1875 al = SSL_AD_DECODE_ERROR;
1876 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1879 if (s->tlsext_ocsp_resp)
1880 OPENSSL_free(s->tlsext_ocsp_resp);
1881 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1882 if (!s->tlsext_ocsp_resp)
1884 al = SSL_AD_INTERNAL_ERROR;
1885 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1888 s->tlsext_ocsp_resplen = resplen;
1889 if (s->ctx->tlsext_status_cb)
1892 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1895 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1896 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1901 al = SSL_AD_INTERNAL_ERROR;
1902 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1908 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1913 int ssl3_get_server_done(SSL *s)
1918 n=s->method->ssl_get_message(s,
1919 SSL3_ST_CR_SRVR_DONE_A,
1920 SSL3_ST_CR_SRVR_DONE_B,
1921 SSL3_MT_SERVER_DONE,
1922 30, /* should be very small, like 0 :-) */
1925 if (!ok) return((int)n);
1928 /* should contain no data */
1929 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1930 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1938 int ssl3_send_client_key_exchange(SSL *s)
1940 unsigned char *p,*d;
1942 unsigned long alg_k;
1943 #ifndef OPENSSL_NO_RSA
1945 EVP_PKEY *pkey=NULL;
1947 #ifndef OPENSSL_NO_KRB5
1949 #endif /* OPENSSL_NO_KRB5 */
1950 #ifndef OPENSSL_NO_ECDH
1951 EC_KEY *clnt_ecdh = NULL;
1952 const EC_POINT *srvr_ecpoint = NULL;
1953 EVP_PKEY *srvr_pub_pkey = NULL;
1954 unsigned char *encodedPoint = NULL;
1955 int encoded_pt_len = 0;
1956 BN_CTX * bn_ctx = NULL;
1959 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1961 d=(unsigned char *)s->init_buf->data;
1964 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1966 /* Fool emacs indentation */
1968 #ifndef OPENSSL_NO_RSA
1969 else if (alg_k & SSL_kRSA)
1972 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1974 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1975 rsa=s->session->sess_cert->peer_rsa_tmp;
1978 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1979 if ((pkey == NULL) ||
1980 (pkey->type != EVP_PKEY_RSA) ||
1981 (pkey->pkey.rsa == NULL))
1983 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1987 EVP_PKEY_free(pkey);
1990 tmp_buf[0]=s->client_version>>8;
1991 tmp_buf[1]=s->client_version&0xff;
1992 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1995 s->session->master_key_length=sizeof tmp_buf;
1998 /* Fix buf for TLS and beyond */
1999 if (s->version > SSL3_VERSION)
2001 n=RSA_public_encrypt(sizeof tmp_buf,
2002 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2004 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2005 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2009 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2013 /* Fix buf for TLS and beyond */
2014 if (s->version > SSL3_VERSION)
2020 s->session->master_key_length=
2021 s->method->ssl3_enc->generate_master_secret(s,
2022 s->session->master_key,
2023 tmp_buf,sizeof tmp_buf);
2024 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2027 #ifndef OPENSSL_NO_KRB5
2028 else if (alg_k & SSL_kKRB5)
2030 krb5_error_code krb5rc;
2031 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2032 /* krb5_data krb5_ap_req; */
2033 krb5_data *enc_ticket;
2034 krb5_data authenticator, *authp = NULL;
2035 EVP_CIPHER_CTX ciph_ctx;
2036 EVP_CIPHER *enc = NULL;
2037 unsigned char iv[EVP_MAX_IV_LENGTH];
2038 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2039 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2040 + EVP_MAX_IV_LENGTH];
2041 int padl, outl = sizeof(epms);
2043 EVP_CIPHER_CTX_init(&ciph_ctx);
2046 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2048 #endif /* KSSL_DEBUG */
2052 if (KRB5SENDAUTH) authp = &authenticator;
2053 #endif /* KRB5SENDAUTH */
2055 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2057 enc = kssl_map_enc(kssl_ctx->enctype);
2062 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2063 if (krb5rc && kssl_err.text)
2064 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2066 #endif /* KSSL_DEBUG */
2070 ssl3_send_alert(s,SSL3_AL_FATAL,
2071 SSL_AD_HANDSHAKE_FAILURE);
2072 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2077 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2078 ** in place of RFC 2712 KerberosWrapper, as in:
2080 ** Send ticket (copy to *p, set n = length)
2081 ** n = krb5_ap_req.length;
2082 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2083 ** if (krb5_ap_req.data)
2084 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2086 ** Now using real RFC 2712 KerberosWrapper
2087 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2088 ** Note: 2712 "opaque" types are here replaced
2089 ** with a 2-byte length followed by the value.
2091 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2092 ** Where "xx xx" = length bytes. Shown here with
2093 ** optional authenticator omitted.
2096 /* KerberosWrapper.Ticket */
2097 s2n(enc_ticket->length,p);
2098 memcpy(p, enc_ticket->data, enc_ticket->length);
2099 p+= enc_ticket->length;
2100 n = enc_ticket->length + 2;
2102 /* KerberosWrapper.Authenticator */
2103 if (authp && authp->length)
2105 s2n(authp->length,p);
2106 memcpy(p, authp->data, authp->length);
2108 n+= authp->length + 2;
2116 s2n(0,p);/* null authenticator length */
2120 tmp_buf[0]=s->client_version>>8;
2121 tmp_buf[1]=s->client_version&0xff;
2122 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2125 /* 20010420 VRS. Tried it this way; failed.
2126 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2127 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2128 ** kssl_ctx->length);
2129 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2132 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2133 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2135 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2137 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2139 if (outl > sizeof epms)
2141 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2144 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2146 /* KerberosWrapper.EncryptedPreMasterSecret */
2148 memcpy(p, epms, outl);
2152 s->session->master_key_length=
2153 s->method->ssl3_enc->generate_master_secret(s,
2154 s->session->master_key,
2155 tmp_buf, sizeof tmp_buf);
2157 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2158 OPENSSL_cleanse(epms, outl);
2161 #ifndef OPENSSL_NO_DH
2162 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2164 DH *dh_srvr,*dh_clnt;
2166 if (s->session->sess_cert == NULL)
2168 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2169 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2173 if (s->session->sess_cert->peer_dh_tmp != NULL)
2174 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2177 /* we get them from the cert */
2178 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2179 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2183 /* generate a new random key */
2184 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2186 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2189 if (!DH_generate_key(dh_clnt))
2191 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2195 /* use the 'p' output buffer for the DH key, but
2196 * make sure to clear it out afterwards */
2198 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2202 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2206 /* generate master key from the result */
2207 s->session->master_key_length=
2208 s->method->ssl3_enc->generate_master_secret(s,
2209 s->session->master_key,p,n);
2213 /* send off the data */
2214 n=BN_num_bytes(dh_clnt->pub_key);
2216 BN_bn2bin(dh_clnt->pub_key,p);
2221 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2225 #ifndef OPENSSL_NO_ECDH
2226 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2228 const EC_GROUP *srvr_group = NULL;
2230 int ecdh_clnt_cert = 0;
2233 /* Did we send out the client's
2234 * ECDH share for use in premaster
2235 * computation as part of client certificate?
2236 * If so, set ecdh_clnt_cert to 1.
2238 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2240 /* XXX: For now, we do not support client
2241 * authentication using ECDH certificates.
2242 * To add such support, one needs to add
2243 * code that checks for appropriate
2244 * conditions and sets ecdh_clnt_cert to 1.
2245 * For example, the cert have an ECC
2246 * key on the same curve as the server's
2247 * and the key should be authorized for
2250 * One also needs to add code in ssl3_connect
2251 * to skip sending the certificate verify
2254 * if ((s->cert->key->privatekey != NULL) &&
2255 * (s->cert->key->privatekey->type ==
2256 * EVP_PKEY_EC) && ...)
2257 * ecdh_clnt_cert = 1;
2261 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2263 tkey = s->session->sess_cert->peer_ecdh_tmp;
2267 /* Get the Server Public Key from Cert */
2268 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2269 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2270 if ((srvr_pub_pkey == NULL) ||
2271 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2272 (srvr_pub_pkey->pkey.ec == NULL))
2274 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2275 ERR_R_INTERNAL_ERROR);
2279 tkey = srvr_pub_pkey->pkey.ec;
2282 srvr_group = EC_KEY_get0_group(tkey);
2283 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2285 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2287 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2288 ERR_R_INTERNAL_ERROR);
2292 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2294 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2298 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2300 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2305 /* Reuse key info from our certificate
2306 * We only need our private key to perform
2307 * the ECDH computation.
2309 const BIGNUM *priv_key;
2310 tkey = s->cert->key->privatekey->pkey.ec;
2311 priv_key = EC_KEY_get0_private_key(tkey);
2312 if (priv_key == NULL)
2314 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2317 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2319 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2325 /* Generate a new ECDH key pair */
2326 if (!(EC_KEY_generate_key(clnt_ecdh)))
2328 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2333 /* use the 'p' output buffer for the ECDH key, but
2334 * make sure to clear it out afterwards
2337 field_size = EC_GROUP_get_degree(srvr_group);
2338 if (field_size <= 0)
2340 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2344 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2347 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2352 /* generate master key from the result */
2353 s->session->master_key_length = s->method->ssl3_enc \
2354 -> generate_master_secret(s,
2355 s->session->master_key,
2358 memset(p, 0, n); /* clean up */
2362 /* Send empty client key exch message */
2367 /* First check the size of encoding and
2368 * allocate memory accordingly.
2371 EC_POINT_point2oct(srvr_group,
2372 EC_KEY_get0_public_key(clnt_ecdh),
2373 POINT_CONVERSION_UNCOMPRESSED,
2376 encodedPoint = (unsigned char *)
2377 OPENSSL_malloc(encoded_pt_len *
2378 sizeof(unsigned char));
2379 bn_ctx = BN_CTX_new();
2380 if ((encodedPoint == NULL) ||
2383 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2387 /* Encode the public key */
2388 n = EC_POINT_point2oct(srvr_group,
2389 EC_KEY_get0_public_key(clnt_ecdh),
2390 POINT_CONVERSION_UNCOMPRESSED,
2391 encodedPoint, encoded_pt_len, bn_ctx);
2393 *p = n; /* length of encoded point */
2394 /* Encoded point will be copied here */
2396 /* copy the point */
2397 memcpy((unsigned char *)p, encodedPoint, n);
2398 /* increment n to account for length field */
2402 /* Free allocated memory */
2403 BN_CTX_free(bn_ctx);
2404 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2405 if (clnt_ecdh != NULL)
2406 EC_KEY_free(clnt_ecdh);
2407 EVP_PKEY_free(srvr_pub_pkey);
2409 #endif /* !OPENSSL_NO_ECDH */
2410 else if (alg_k & SSL_kGOST)
2412 /* GOST key exchange message creation */
2413 EVP_PKEY_CTX *pkey_ctx;
2416 unsigned int md_len;
2418 unsigned char premaster_secret[32],shared_ukm[32];
2419 EVP_MD_CTX *ukm_hash;
2422 /* Get server sertificate PKEY and create ctx from it */
2423 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2425 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2427 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2431 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2432 /* If we have send a certificate, and certificate key
2434 * parameters match those of server certificate, use
2435 * certificate key for key exchange
2438 /* Otherwise, generate ephemeral key pair */
2440 EVP_PKEY_encrypt_init(pkey_ctx);
2441 /* Generate session key */
2442 RAND_bytes(premaster_secret,32);
2443 /* If we have client certificate, use its secret as peer key */
2444 if (s->cert->key->privatekey) {
2445 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <0) {
2446 /* If there was an error - just ignore it. Ephemeral key
2451 /* Set flag "client cert key is used for key
2455 /* Compute shared IV and store it in algorithm-specific
2457 ukm_hash = EVP_MD_CTX_create();
2458 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2459 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2460 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2461 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2462 EVP_MD_CTX_destroy(ukm_hash);
2463 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2465 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2469 /* Make GOST keytransport blob message */
2470 /*Encapsulate it into sequence */
2471 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2474 if (EVP_PKEY_encrypt(pkey_ctx,(unsigned char *)p+1,&msglen,premaster_secret,32)<0) {
2475 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2479 *(p++)= msglen & 0xff;
2481 EVP_PKEY_CTX_free(pkey_ctx);
2482 s->session->master_key_length=
2483 s->method->ssl3_enc->generate_master_secret(s,
2484 s->session->master_key,premaster_secret,32);
2485 EVP_PKEY_free(pub_key);
2488 #ifndef OPENSSL_NO_PSK
2489 else if (alg_k & SSL_kPSK)
2491 char identity[PSK_MAX_IDENTITY_LEN];
2492 unsigned char *t = NULL;
2493 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2494 unsigned int pre_ms_len = 0, psk_len = 0;
2498 if (s->psk_client_callback == NULL)
2500 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2501 SSL_R_PSK_NO_CLIENT_CB);
2505 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2506 identity, PSK_MAX_IDENTITY_LEN,
2507 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2508 if (psk_len > PSK_MAX_PSK_LEN)
2510 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2511 ERR_R_INTERNAL_ERROR);
2514 else if (psk_len == 0)
2516 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2517 SSL_R_PSK_IDENTITY_NOT_FOUND);
2521 /* create PSK pre_master_secret */
2522 pre_ms_len = 2+psk_len+2+psk_len;
2524 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2526 memset(t, 0, psk_len);
2530 if (s->session->psk_identity_hint != NULL)
2531 OPENSSL_free(s->session->psk_identity_hint);
2532 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2533 if (s->ctx->psk_identity_hint != NULL &&
2534 s->session->psk_identity_hint == NULL)
2536 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2537 ERR_R_MALLOC_FAILURE);
2541 if (s->session->psk_identity != NULL)
2542 OPENSSL_free(s->session->psk_identity);
2543 s->session->psk_identity = BUF_strdup(identity);
2544 if (s->session->psk_identity == NULL)
2546 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2547 ERR_R_MALLOC_FAILURE);
2551 s->session->master_key_length =
2552 s->method->ssl3_enc->generate_master_secret(s,
2553 s->session->master_key,
2554 psk_or_pre_ms, pre_ms_len);
2555 n = strlen(identity);
2557 memcpy(p, identity, n);
2561 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2562 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2565 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2572 ssl3_send_alert(s, SSL3_AL_FATAL,
2573 SSL_AD_HANDSHAKE_FAILURE);
2574 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2575 ERR_R_INTERNAL_ERROR);
2579 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2582 s->state=SSL3_ST_CW_KEY_EXCH_B;
2583 /* number of bytes to write */
2588 /* SSL3_ST_CW_KEY_EXCH_B */
2589 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2591 #ifndef OPENSSL_NO_ECDH
2592 BN_CTX_free(bn_ctx);
2593 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2594 if (clnt_ecdh != NULL)
2595 EC_KEY_free(clnt_ecdh);
2596 EVP_PKEY_free(srvr_pub_pkey);
2601 int ssl3_send_client_verify(SSL *s)
2603 unsigned char *p,*d;
2604 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2606 EVP_PKEY_CTX *pctx=NULL;
2607 #ifndef OPENSSL_NO_RSA
2611 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2615 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2617 d=(unsigned char *)s->init_buf->data;
2619 pkey=s->cert->key->privatekey;
2620 /* Create context from key and test if sha1 is allowed as digest */
2621 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2622 EVP_PKEY_sign_init(pctx);
2623 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2625 s->method->ssl3_enc->cert_verify_mac(s,
2627 &(data[MD5_DIGEST_LENGTH]));
2633 #ifndef OPENSSL_NO_RSA
2634 if (pkey->type == EVP_PKEY_RSA)
2636 s->method->ssl3_enc->cert_verify_mac(s,
2639 if (RSA_sign(NID_md5_sha1, data,
2640 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2641 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2643 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2651 #ifndef OPENSSL_NO_DSA
2652 if (pkey->type == EVP_PKEY_DSA)
2654 if (!DSA_sign(pkey->save_type,
2655 &(data[MD5_DIGEST_LENGTH]),
2656 SHA_DIGEST_LENGTH,&(p[2]),
2657 (unsigned int *)&j,pkey->pkey.dsa))
2659 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2667 #ifndef OPENSSL_NO_ECDSA
2668 if (pkey->type == EVP_PKEY_EC)
2670 if (!ECDSA_sign(pkey->save_type,
2671 &(data[MD5_DIGEST_LENGTH]),
2672 SHA_DIGEST_LENGTH,&(p[2]),
2673 (unsigned int *)&j,pkey->pkey.ec))
2675 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2684 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2686 unsigned char signbuf[64];
2689 s->method->ssl3_enc->cert_verify_mac(s,
2690 NID_id_GostR3411_94,
2692 if (!EVP_PKEY_sign(pctx,signbuf,&sigsize,data,32)) {
2693 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2694 ERR_R_INTERNAL_ERROR);
2697 for (i=63,j=0; i>=0; j++, i--) {
2705 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2708 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2711 s->state=SSL3_ST_CW_CERT_VRFY_B;
2712 s->init_num=(int)n+4;
2715 EVP_PKEY_CTX_free(pctx);
2716 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2718 EVP_PKEY_CTX_free(pctx);
2722 int ssl3_send_client_certificate(SSL *s)
2725 EVP_PKEY *pkey=NULL;
2729 if (s->state == SSL3_ST_CW_CERT_A)
2731 if ((s->cert == NULL) ||
2732 (s->cert->key->x509 == NULL) ||
2733 (s->cert->key->privatekey == NULL))
2734 s->state=SSL3_ST_CW_CERT_B;
2736 s->state=SSL3_ST_CW_CERT_C;
2739 /* We need to get a client cert */
2740 if (s->state == SSL3_ST_CW_CERT_B)
2742 /* If we get an error, we need to
2743 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2744 * We then get retied later */
2746 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2749 s->rwstate=SSL_X509_LOOKUP;
2752 s->rwstate=SSL_NOTHING;
2753 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2755 s->state=SSL3_ST_CW_CERT_B;
2756 if ( !SSL_use_certificate(s,x509) ||
2757 !SSL_use_PrivateKey(s,pkey))
2763 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2766 if (x509 != NULL) X509_free(x509);
2767 if (pkey != NULL) EVP_PKEY_free(pkey);
2770 if (s->version == SSL3_VERSION)
2772 s->s3->tmp.cert_req=0;
2773 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2778 s->s3->tmp.cert_req=2;
2782 /* Ok, we have a cert */
2783 s->state=SSL3_ST_CW_CERT_C;
2786 if (s->state == SSL3_ST_CW_CERT_C)
2788 s->state=SSL3_ST_CW_CERT_D;
2789 l=ssl3_output_cert_chain(s,
2790 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2794 /* SSL3_ST_CW_CERT_D */
2795 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2798 #define has_bits(i,m) (((i)&(m)) == (m))
2800 int ssl3_check_cert_and_algorithm(SSL *s)
2804 EVP_PKEY *pkey=NULL;
2806 #ifndef OPENSSL_NO_RSA
2809 #ifndef OPENSSL_NO_DH
2813 sc=s->session->sess_cert;
2816 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2820 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2821 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2823 /* we don't have a certificate */
2824 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2827 #ifndef OPENSSL_NO_RSA
2828 rsa=s->session->sess_cert->peer_rsa_tmp;
2830 #ifndef OPENSSL_NO_DH
2831 dh=s->session->sess_cert->peer_dh_tmp;
2834 /* This is the passed certificate */
2836 idx=sc->peer_cert_type;
2837 #ifndef OPENSSL_NO_ECDH
2838 if (idx == SSL_PKEY_ECC)
2840 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2841 s->s3->tmp.new_cipher) == 0)
2842 { /* check failed */
2843 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2852 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2853 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2854 EVP_PKEY_free(pkey);
2857 /* Check that we have a certificate if we require one */
2858 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2860 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2863 #ifndef OPENSSL_NO_DSA
2864 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2866 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2870 #ifndef OPENSSL_NO_RSA
2871 if ((alg_k & SSL_kRSA) &&
2872 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2874 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2878 #ifndef OPENSSL_NO_DH
2879 if ((alg_k & SSL_kEDH) &&
2880 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2882 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2885 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2887 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2890 #ifndef OPENSSL_NO_DSA
2891 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2893 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2899 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2901 #ifndef OPENSSL_NO_RSA
2902 if (alg_k & SSL_kRSA)
2905 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2907 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2913 #ifndef OPENSSL_NO_DH
2914 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2917 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2919 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2926 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2932 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2937 /* Check to see if handshake is full or resumed. Usually this is just a
2938 * case of checking to see if a cache hit has occurred. In the case of
2939 * session tickets we have to check the next message to be sure.
2942 #ifndef OPENSSL_NO_TLSEXT
2943 static int ssl3_check_finished(SSL *s)
2947 /* If we have no ticket it cannot be a resumed session. */
2948 if (!s->session->tlsext_tick)
2950 /* this function is called when we really expect a Certificate
2951 * message, so permit appropriate message length */
2952 n=s->method->ssl_get_message(s,
2958 if (!ok) return((int)n);
2959 s->s3->tmp.reuse_message = 1;
2960 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2961 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
2968 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
2971 #ifndef OPENSSL_NO_ENGINE
2972 if (s->ctx->client_cert_engine)
2974 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
2975 SSL_get_client_CA_list(s),
2976 px509, ppkey, NULL, NULL, NULL);
2981 if (s->ctx->client_cert_cb)
2982 i = s->ctx->client_cert_cb(s,px509,ppkey);